diff options
| author | aozima <[email protected]> | 2015-06-04 12:23:24 +0800 |
|---|---|---|
| committer | aozima <[email protected]> | 2015-06-04 12:23:24 +0800 |
| commit | 314379cc776756283d6e62259f59bfe91b1e8870 (patch) | |
| tree | 0f1f96b19f68d185f4d25b674acc2b67bb457987 /libcpu | |
| parent | be76b10be6a01881259c2eaeeb2d375b9c72e216 (diff) | |
implement __user_initial_stackheap
Diffstat (limited to 'libcpu')
| -rw-r--r-- | libcpu/arm/arm926/start_rvds.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libcpu/arm/arm926/start_rvds.S b/libcpu/arm/arm926/start_rvds.S index 68fd887d66..1c1e48c07e 100644 --- a/libcpu/arm/arm926/start_rvds.S +++ b/libcpu/arm/arm926/start_rvds.S @@ -93,6 +93,12 @@ SYS_STACK_START EXPORT SVC_STACK_START SVC_STACK_START Stack_Top +__initial_sp + +__heap_base +Heap_Mem SPACE Heap_Size +__heap_limit + PRESERVE8 ;--------------Jump vector table------------------------------------------------ EXPORT Entry_Point @@ -292,4 +298,31 @@ rt_hw_context_switch_interrupt_do PROC LDMFD SP!, {R0-R12,LR,PC}^ ; pop new task's R0-R12,LR & PC SPSR to CPSR ENDP + +;******************************************************************************* +; User Stack and Heap initialization +;******************************************************************************* + IF :DEF:__MICROLIB + + EXPORT __initial_sp + EXPORT __heap_base + EXPORT __heap_limit + + ELSE + + IMPORT __use_two_region_memory + EXPORT __user_initial_stackheap + +__user_initial_stackheap + + LDR R0, = Heap_Mem ; heap base + LDR R1, = SVC_STACK_START ; stack base (top-address) + LDR R2, = (Heap_Mem + Heap_Size) ; heap limit + LDR R3, = (SVC_STACK_START - SVC_STK_SIZE) ; stack limit (low-address) + BX LR + + ALIGN + + ENDIF + END |